Question

Пароход, двигаясь против течения со скоростью 16 км/ч, проходит расстояние между двумя пристанями за 4 ч. За какое время он пройдёт то же расстояние по течению, если его скорость в этом случае равна 5,8 м/с?

Answer 1

S=v1*t1
S=(vп+vт)*t2
v1=vп-vт
vт=vп-v1
(v1*t1=(vп+vп-v1)*t2
(v1*t1=(2*vп-v1)*t2
t2=v1*t1/(2*vп+v1)
t2=16*4/(2*21+16)=64/58=1.1ч

Answer 2

Problem Analysis

We are given that a steamship is moving against the current with a speed of 16 km/h and it takes 4 hours to travel a certain distance between two piers. We need to determine how long it will take for the steamship to cover the same distance with the current flowing at a speed of 5.8 m/s.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's calculate the distance traveled by the steamship in the given time of 4 hours when moving against the current.

Distance = Speed x Time Distance = 16 km/h x 4 h = 64 km

Now, we need to find the time it will take for the steamship to cover the same distance with the current flowing at a speed of 5.8 m/s.

Time = Distance / Speed Time = 64 km / (5.8 m/s) = 64000 m / 5.8 m/s = 11034.48 s

Therefore, it will take approximately 11034.48 seconds for the steamship to cover the same distance with the current flowing at a speed of 5.8 m/s.

Answer

The steamship will take approximately 11034.48 seconds to cover the same distance with the current flowing at a speed of 5.8 m/s.

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